Per SMT-LIB spec, allow (set-info..) command to succeed implicitly with unknown key.
Merge branch '1.2.x'
Re-enable predicate subtyping, reversing commit 8f9f549 (needed for Kind integration)
fix for lambdas in relation to subtypes
fixup for miplib trick (related to lambda fix for subtypes)
subrange-related fix
new --tear-down-incremental mode
new --force-logic option that overrides what the input says